WO2023051553A1

WO2023051553A1 - Optical module cage assembly and optical communication apparatus

Info

Publication number: WO2023051553A1
Application number: PCT/CN2022/121856
Authority: WO
Inventors: 周聪; 赵才军; 颜波
Original assignee: 华为技术有限公司
Priority date: 2021-09-30
Filing date: 2022-09-27
Publication date: 2023-04-06
Also published as: CN115903150A

Abstract

An optical module cage assembly, comprising an optical module cage (1), a heat sink (2) and at least one shielding member (3). The heat sink (2) comprises a body portion (21) and a boss portion (22), wherein the body portion (21) is located on an outer surface of a first housing wall (11), and the boss portion (22) is located at a window (110) of the optical module cage (1). The shielding member (3) is located on a path of an electromagnetic signal that is leaked to the outside via the window (110), and the shielding member comes into contact with a side wall (212) of the body portion (21) of the heat sink (2). By adding the shielding member (3), the optical module cage assembly ameliorates the decrease in the shielding performance of the optical module cage (1) due to the window, and does not affect the size of the boss portion (22) of the heat sink (2), such that the shielding performance of the optical module cage assembly can be improved and the heat dissipation performance of the optical module cage assembly is also not decreased. Further provided is an optical communication apparatus comprising the optical module cage assembly.

Description

Optical cage components and optical communication equipment

This disclosure claims the priority of the Chinese patent application with the application number 202111165348.2 and the invention title "optical cage assembly and optical communication equipment" filed on September 30, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present disclosure relates to the technical field of communication, in particular to an optical cage assembly and optical communication equipment.

Background technique

The optical cage is a housing of an interface part of an optical communication device, and has a slot for inserting an optical module, so as to achieve docking between the optical module and the connector in the optical cage. In addition, when the optical module is working, it will radiate electromagnetic signals to the outside, and the optical cage also plays a role in shielding electromagnetic signals.

In order to dissipate heat for the optical module, windows are often opened on the top wall of the optical cage, and a radiator is added to the top wall of the optical cage. A part of the radiator extends into the optical cage through the window, and contacts with the optical module to absorb heat generated by the optical module.

However, after the window is opened on the top wall of the optical cage, the electromagnetic signal radiated from the optical module will leak out from the gap between the window and the heat sink, making the shielding performance of the optical cage worse.

Contents of the invention

The present disclosure provides an optical cage assembly and an optical communication device. The optical cage assembly includes a shielding member, and the shielding member is in contact with the side wall of the main body of the heat sink, which can improve the shielding effect of the optical cage assembly. The technical solutions of the optical cage assembly and the optical communication device are as follows:

In a first aspect, an optical cage assembly is provided, the optical cage assembly includes an optical cage, a heat sink and at least one shield; the first shell wall of the optical cage has a window; the heat sink includes a main body and A boss part, the bottom wall of the main body part is connected to the boss part, the main body part is located on the outer surface of the first shell wall, and the boss part is located at the window opening; the at least one The shielding part is located on the path where the electromagnetic signal leaks through the window, and is in contact with the side wall of the main body.

Wherein, the optical cage is a casing of an interface component of an optical communication device, and has a slot for accommodating an optical module. The inside of the slot has a connector for docking with the optical module. The present disclosure does not limit the type of the photocage, and the photocage may be a single-layer photocage, or a double-layer photocage or a connected photocage. In a possible implementation manner, the optical cage is a quad small form factor pluggable-double density (QSFP-DD) optical cage.

The first shell wall of the light cage has windows, and the first shell wall can be any shell wall on the light cage. In a possible implementation manner, the first housing wall may be a housing wall adjacent to the opening of the slot. For example, the first housing wall is the housing wall of the photocage for connection to the printed circuit board. For another example, the first housing wall is the housing wall opposite to the housing wall of the photocage for connecting with the printed circuit board. The window is used to allow the boss portion of the radiator to extend into the interior of the light cage, and can be in any shape. For example, the window can be rectangular, but not limited thereto.

The heat sink is used to improve the heat dissipation performance of the optical cage assembly. The radiator includes a main body and a boss. In a possible implementation manner, the main body part includes a base plate and heat dissipation teeth, the bottom wall of the base plate is connected with the boss part, and the top wall of the base plate is connected with the heat dissipation teeth. The present disclosure does not limit the fixing method of the heat sink. In a possible implementation manner, the optical cage assembly further includes a buckle, and the buckle is fastened with the light cage to compress the heat sink and the light cage.

Shields are used to improve the shielding performance of the photocage assembly.

According to the technical solution provided by the present disclosure, the optical cage assembly provided by the present disclosure includes an optical cage, a heat sink and a shielding piece. The main body of the radiator is located on the outer surface of the first shell wall of the light cage, and the boss is located at the opening of the window. The shielding part is located on the path where the electromagnetic signal leaks through the window, and is in contact with the side wall of the main body, so that the optical cage assembly can suppress the electromagnetic noise generated by the optical module, and has good shielding performance.

Moreover, since the shielding part is in contact with the side wall of the main body, it will not affect the size of the boss part. The size of the boss part can be designed according to actual needs, so that the heat dissipation performance of the photocage assembly is also better.

In a possible implementation manner, the optical cage, the heat sink, and the at least one shielding member are all electrically conductive, and the at least one shielding member is electrically connected to the optical cage and the heat sink, respectively. .

According to the technical solution provided by the present disclosure, the shield provided by the present disclosure has conductivity, and the shield is fixed on the first shell wall of the photocage and is in contact with the radiator, so that the shield is electrically connected to both the photocage and the radiator, thereby forming a A shielding structure in the form of "radiator-shielding member-optical cage" is established, which can suppress the electromagnetic signal radiated from the optical module.

In a possible implementation manner, the material of the at least one shielding member is a wave-absorbing material.

In the technical solution provided by the present disclosure, the material of the shielding member can be a wave-absorbing material, which can suppress the electromagnetic noise generated by the optical module by absorbing the leaked electromagnetic signal, so that the optical cage assembly has good shielding performance.

In a possible implementation manner, the shielding member is located at one side of the main body of the heat sink.

In a possible implementation manner, each of the shielding members includes a support bar and an elastic member; the support bar is fixed on the outer surface of the first shell wall and extends along any edge of the window; The elastic member is in contact with the support bar, and the elastic member is in contact with the side wall of the main body.

Wherein, both the support bar and the elastic member may have electrical conductivity, or both may be made of wave-absorbing material, or at least the elastic member may be made of wave-absorbing material.

In the technical solution provided by the present disclosure, the light cage assembly forms a shielding structure in the form of "radiator-elastic member-support bar-light cage". The elastic member has elasticity, so it can better fill the air gap between the support bar and the side wall of the main body, so that the shielding effect of the light cage assembly is better.

In a possible implementation manner, the support bar includes a fixing plate and a supporting plate, one side of the fixing plate is fixedly connected to the side wall of the supporting plate; the side of the fixing plate far away from the supporting plate is connected to the The first shell wall is fixedly connected; the support plate is fixedly connected or tightly fitted to the elastic member.

Wherein, the fixing plate and the supporting plate may be perpendicular to each other. The support plate is opposite to the side wall of the main body of the heat sink, and the elastic member may fill an air gap between the support plate and the side wall of the heat sink.

The technical solution provided by the present disclosure increases the connection area between the support bar and the first shell wall by setting one side of the fixing plate to be fixedly connected with the first shell wall, thereby making the fixing of the support bar on the first shell wall more stable.

In a possible implementation manner, there are multiple radiators, and there are two shielding pieces between two adjacent radiators; the two shielding pieces are respectively in contact with adjacent radiators, and the two shielding pieces The support bars of the two shields share the same fixed plate.

In the technical solution provided by the present disclosure, by designing the support bars of the two shields between two adjacent radiators to share the same fixed plate, the two support bars are actually one component, which reduces the cost of the light cage assembly. The number of parts. Moreover, the width of the fixing plate is larger, so that the fixing of the support bar on the first shell wall is more stable.

In a possible implementation manner, the support bar is integrally bent and formed.

In the technical solution provided by the present disclosure, the supporting bar is formed by integrally bending and forming, so that the manufacturing of the supporting bar is easier and the strength is higher.

In a possible implementation manner, the support bar includes a support plate; a side wall of the support plate is fixedly connected to the first shell wall; and the support plate is fixedly connected to or tightly fitted to the elastic member.

In a possible implementation manner, the support plate is integrally connected with the edge of the window, and the support plate is bent relative to the first shell wall.

In a possible implementation manner, the elastic member is fixedly connected to the support bar, and is closely attached to the side wall of the main body.

The technical solution provided by the present disclosure makes the manufacture of the shielding member more convenient by arranging the elastic member to be fixedly connected with the support bar, thereby making the manufacture of the photocage assembly more convenient.

In a possible implementation manner, the elastic member is fixedly connected to the main body part, and is closely attached to the support bar.

In a possible implementation manner, the shielding member includes a support bar; the side wall of the main body of the heat sink has an elastic member, and the support bar is in close contact with the elastic member.

In a possible implementation manner, the elastic member includes one or more of metal reeds, conductive foam, conductive rubber, and metal spring points.

In a possible implementation manner, the at least one shielding part includes at least two first shielding parts; the two first shielding parts respectively extend along two long edges of the window, and the long edges are A rim extending lengthwise of the fenestration.

In a possible implementation manner, the at least one shielding part includes at least two first shielding parts; the two first shielding parts are located on one side of two long edges of the window respectively.

In a possible implementation manner, each of the first shielding elements includes at least a first shielding section; the first shielding section is located between two ends of the long edge.

The technical solution provided by the present disclosure can effectively improve the shielding performance of the optical cage assembly by arranging the first shielding section on the long edge or one side of the long edge where electromagnetic signal leakage is relatively serious.

In a possible implementation manner, each of the first shielding members includes at least a first shielding section; the first shielding section is located between two straight lines where two wide edges of the opening are located.

In a possible implementation manner, the first shielding segment is located on one side of the long edge.

In a possible implementation manner, the first shielding section is integrally connected with the long edge.

In a possible implementation manner, each of the first shielding elements further includes a second shielding section; the second shielding section is located outside the two ends of the long edge.

In a possible implementation manner, each of the first shielding elements further includes a second shielding section; the second shielding section is located outside the range defined by two straight lines where the two wide edges of the window are located .

In a possible implementation manner, the at least one shielding part further includes at least one second shielding part; the second shielding part extends along any wide edge of the window, and the wide edge is along the The edge extending across the width of the fenestration.

In a possible implementation manner, the at least one shielding part further includes at least one second shielding part; the second shielding part is located on one side of any wide edge of the window, and the wide edge is The edge extending in the width direction of the window.

In a possible implementation manner, there are two second shielding members, and the two second shielding members respectively extend along two wide edges of the window.

In the technical solution provided by the present disclosure, two first shielding parts and two second shielding parts are arranged to surround the heat sink, so that the shielding performance of the optical cage assembly is better.

In a possible implementation manner, there are multiple shielding elements, and the multiple shielding elements surround the heat sink.

In a second aspect, an optical communication device is provided, and the optical communication device includes the optical cage assembly according to any one of the first aspect.

The optical communication device provided by the present disclosure uses the optical cage assembly provided by the first aspect, so that the optical communication device has better heat dissipation performance and shielding performance of electromagnetic noise of the optical module.

Description of drawings

FIG. 1 is a schematic diagram of an optical cage assembly provided by an embodiment of the present disclosure;

Fig. 2 is a schematic diagram of an optical cage assembly provided by an embodiment of the present disclosure;

Fig. 3 is a schematic diagram of an optical cage assembly provided by an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of an optical cage assembly provided by an embodiment of the present disclosure;

Fig. 5 is a partial schematic diagram of an optical cage assembly provided by an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 7 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 8 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 10 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 11 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 12 is a schematic diagram of a shield provided by an embodiment of the present disclosure;

Fig. 13 is a schematic diagram of an optical cage assembly behind a hidden radiator provided by an embodiment of the present disclosure;

Fig. 14 is a schematic diagram of an optical cage assembly with a hidden radiator provided by an embodiment of the present disclosure;

Fig. 15 is a schematic diagram of an optical cage assembly with a hidden radiator provided by an embodiment of the present disclosure;

Fig. 16 is a schematic diagram of an optical cage assembly with a hidden radiator provided by an embodiment of the present disclosure;

Fig. 17 is a schematic diagram of an optical cage assembly with a hidden radiator provided by an embodiment of the present disclosure;

Fig. 18 is a schematic diagram of an optical cage assembly with a heat sink hidden according to an embodiment of the present disclosure.

illustration

1, light cage, 10, slot, 11, first shell wall, 110, window opening, 111, long edge, 112, wide edge;

2. Radiator, 21, main body, 21a, substrate, 21b, cooling teeth, 211, bottom wall, 212, side wall, 22, boss part;

3. Shield, 301, support bar, 3011, fixed plate, 3012, support plate, 302, elastic member, 3021, support part, 3022, reed part, 3023, connecting piece, 3024, bullet point, 31, first shielding element, 311, first shielding section, 312, second shielding section, 32, second shielding element;

a. Printed circuit board, b. Optical module, c. Connector.

Detailed ways

Optical modules, as photoelectric conversion devices, are widely used in various optical communication devices. As the transmission rate and transmission capacity of optical modules increase, the power consumption of optical modules also increases, and the heat dissipation of optical modules has become one of the bottlenecks restricting product evolution and performance improvement.

When in use, the optical module needs to be inserted into the optical cage of the optical communication device, so as to realize the docking between the optical module and the connector in the optical cage. In order to improve the heat dissipation performance of the optical module, windows are generally opened on the top wall of the optical cage and an external heat sink is added. The radiator includes a main body and a boss. The boss protrudes into the optical cage through the window and contacts with the optical module. The main body is located outside the photocage and is overlapped on the top wall. The main body generally has cooling teeth. The heat generated when the optical module is in operation can be conducted to the main body through the boss, and dissipated through the cooling teeth on the main body.

However, when the window is opened on the top wall of the optical cage, the complete shielding of the optical cage is destroyed, and the electromagnetic noise generated by the optical module will leak from the gap between the window and the radiator, as shown in Figure 1 (the arrow in Figure 1 shows the leakage path of the electromagnetic signal). The external radiation of the optical module deteriorates significantly, and even causes the optical communication equipment to fail to meet the electromagnetic radiation requirements of the electromagnetic compatibility (electromagnetic compatibility, EMC) standard.

In order to suppress the external electromagnetic radiation of the optical module, in the related art, a layer of compressible conductive material is added around the boss portion of the heat sink between the top wall of the light cage and the bottom wall of the main body of the heat sink. liner. The conductive gasket fills the air gap between the photocage and the heat sink, thereby suppressing the leakage of electromagnetic radiation.

However, since the conductive pad is located around the boss portion, the conductive pad will affect the size of the boss portion. The width of the conductive gasket is inversely proportional to the width of the boss. If the width of the boss is larger, the width of the conductive gasket will be smaller, which will make it difficult for the conductive gasket to be stably fixed on the photocage. The gasket is easy to fall off; and if the width of the conductive gasket is large, the width of the boss portion will be small, which will lead to poor heat dissipation performance of the photocage. That is to say, adopting the technical solution in the related art will affect the heat dissipation performance of the light cage.

In view of the above technical problems, embodiments of the present disclosure provide an optical cage assembly, which has good shielding performance and heat dissipation performance. The following is an exemplary description of the photocage assembly provided by the embodiments of the present disclosure:

An embodiment of the present disclosure provides an optical cage assembly. As shown in FIG. 2 to FIG. 4 , the optical cage assembly includes an optical cage 1 , a radiator 2 and at least one shielding member 3 . The first housing wall 11 of the photocage 1 has a window 110 . The radiator 2 includes a main body 21 and a boss 22 , the bottom wall 211 of the main body 21 is connected to the boss 22 , the main body 21 is located on the outer surface of the first shell wall 11 , and the boss 22 is located at the window 110 . At least one shielding member 3 is located on the path of electromagnetic signals leaking through the window, and is in contact with the side wall 212 of the main body 21 .

Wherein, the optical cage 1 is a casing of an interface component of an optical communication device, and has a slot 10 for accommodating an optical module. There is a connector inside the slot 10, and the connector is used for docking with the optical module. The embodiment of the present disclosure does not limit the type of the photocage 1 , and the photocage 1 may be a single-layer photocage, or a double-layer photocage or a connected photocage. In some examples, as shown in FIG. 3 , the optical cage 1 is a quad small form factor pluggable-double density (QSFP-DD) optical cage.

The first shell wall 11 of the photocage 1 has a window 110 , and the first shell wall 11 can be any shell wall on the photocage 1 . In some examples, the first housing wall 11 may be the housing wall adjacent to the opening of the socket 10 . For example, the first shell wall 11 is the shell wall of the photocage 1 for connecting with the printed circuit board. For another example, the first shell wall 11 is the shell wall opposite to the shell wall of the photocage 1 for connecting with the printed circuit board. For another example, the first housing wall 11 is a side wall of the photocage 1 , and the side wall is perpendicular to the printed circuit board. The window 110 is used for the boss portion 22 of the radiator 2 to extend into the inside of the light cage 1, and can be in any shape, for example, as shown in Figure 4, the window 110 can be rectangular, but not limited thereto.

The radiator 2 is used to improve the heat dissipation performance of the optical cage assembly. The heat sink 2 includes a main body portion 21 and a boss portion 22 . In some examples, as shown in FIG. 4 , the main body 21 includes a base plate 21a and heat dissipation teeth 21b, the bottom wall 211 of the base plate 21a is connected to the boss portion 22, and the top wall of the base plate 21a is connected to the heat dissipation teeth 21b. The embodiment of the present disclosure does not limit the fixing method of the radiator 2 . In some examples, the optical cage assembly further includes a buckle, which is fastened with the optical cage 1 and presses the radiator 2 and the optical cage 1 tightly.

The shielding member 3 is used to improve the shielding performance of the optical cage assembly. The shielding member 3 is conductive, for example, it can be realized by copper alloy. The shielding member 3 is fixed to the first shell wall 11 of the optical cage 1, located on the path where the electromagnetic signal leaks through the window 110, and contacts the side wall 212 of the main body 21 of the radiator 2, so that the shielding member 3 and the optical cage 1 and heat sink 2 are electrically connected to form a shielding structure in the form of "radiator 2-shielding member 3-optical cage 1", which can suppress the electromagnetic signal radiated from the optical module. The embodiment of the present disclosure does not limit the position of the shielding part 3 , and the shielding part 3 may be in contact with any side wall 212 of the main body part 21 .

According to the technical solution provided by the embodiment of the present disclosure, the optical cage assembly provided by the embodiment of the present disclosure includes an optical cage 1 , a heat sink 2 and a shielding member 3 . The main part 21 of the radiator 2 is located on the outer surface of the first shell wall 11 of the photocage 1 , and the boss part 22 is located at the window 110 . The shielding member 3 is fixed on the outer surface of the first housing wall 11, and is in contact with the side wall 212 of the main body 21, forming a shielding structure in the form of "radiator 2-shielding member 3-photocage 1", so that the photocage assembly can It suppresses the electromagnetic noise generated by the optical module and has good shielding performance.

Moreover, since the shielding member 3 is in contact with the side wall 212 of the main body portion 21, it will not affect the size of the boss portion 22. The size of the boss portion 22 can be designed according to actual needs, so that the heat dissipation performance of the photocage assembly is also improved. better.

In the following, the structure of the shielding member 3 will be described in more detail as an example:

In some examples, as shown in FIG. 5 , the shielding element 3 includes a support bar 301 and an elastic element 302 . The support bar 301 is fixed on the outer surface of the first shell wall 11 and extends along any edge of the window 110 . The elastic member 302 is in contact with the support bar 301 , and the elastic member 302 is in contact with the side wall 212 of the main body portion 21 .

The support bar 301 is long and can extend along any edge of the window 110 . In some examples, the support bar 301 extends along the long edge 111 of the window 110 , and in other examples, the support bar 301 extends along the wide edge 112 of the window 110 .

The embodiment of the present disclosure does not limit the shape of the elastic member 302 , and in some examples, the elastic member 302 may be elongated and extend along the support bar 301 . In some other examples, there are multiple elastic members 302 , and the plurality of elastic members 302 are distributed at intervals along the support bar 301 .

Both the support bar 301 and the elastic member 302 have conductivity, so that the photocage assembly forms a shielding structure in the form of "radiator 2 - elastic member 302 - support bar 301 - photocage 1". The elastic member 302 has elasticity, so it can better fill the air gap between the support bar 301 and the side wall 212 of the main body 21 , so that the shielding effect of the photocage assembly is better.

Next, a more detailed exemplary description is given to the support bar 301:

In some examples, as shown in FIG. 6 and FIG. 7 , the support bar 301 includes a fixing plate 3011 and a supporting plate 3012 , and one side of the fixing plate 3011 is fixedly connected to a side wall of the supporting plate 3012 . A side of the fixing plate 3011 away from the supporting plate 3012 is fixedly connected with the first housing wall 11 . The support plate 3012 is fixedly connected with or tightly fitted to the elastic member 302 .

The fixing plate 3011 can increase the connection area between the support bar 301 and the first shell wall 11 , so that the fixing of the support bar 301 on the first shell wall 11 is more stable. The fixing method between the fixing plate 3011 and the first housing wall 11 may be welding or bonding, but is not limited thereto. In some examples, the fixing plate 3011 and the supporting plate 3012 are perpendicular to each other.

The support plate 3012 is used to fix the elastic member 302 or fit closely with the elastic member 302 . The support plate 3012 is opposite to the side wall 212 of the main body 21 of the heat sink 2 , and the elastic member 302 can fill the air gap between the support plate 3012 and the side wall 212 of the main body 21 .

In some examples, as shown in FIGS. 6 and 7 , one fixing plate 3011 is fixed to one supporting plate 3012 .

In some other examples, as shown in FIGS. 8-10 , there are multiple radiators 2 , and there are two shielding members 3 between two adjacent radiators 2 . The two shielding pieces 3 are respectively in contact with the adjacent heat sinks 2 , and the support bars 301 of the two shielding pieces 3 share the same fixing plate 3011 . In this way, the two support bars 301 are actually one part, which reduces the number of parts included in the photocage assembly, and the width of the fixing plate 3011 is larger, making the fixing of the support bars 301 on the first shell wall 11 more stable.

In other examples, the support strips 301 of two shields 3 located between two adjacent heat sinks 2 may not share the same fixing plate 3011 . That is, the supporting strips 301 of the two shielding elements 3 located between two adjacent radiators 2 are separated from each other, and the two supporting strips 301 are two components.

The embodiment of the present disclosure does not limit the connection method of the fixing plate 3011 and the supporting plate 3012. In some examples, as shown in FIG. 6 , FIG. 7 , FIG. 9 and FIG. 10 , the supporting bar 301 is integrally bent and formed. This type of support bar 301 can also be called a hem, wherein the support bar 301 shown in Figure 6 and Figure 7 can be called an L-shaped hem, and the support bar 301 shown in Figure 9 and Figure 10 can be called a U-shaped hem. Shaped hem. The manufacturing method of bending and forming makes the manufacturing of the support bar 301 more convenient and has higher strength.

Certainly, in some other examples, the fixing plate 3011 and the supporting plate 3012 may also be non-integrally connected, for example, the fixing plate 3011 and the supporting plate 3012 may be welded or glued together.

In addition to the form that the above-mentioned support bar 301 includes a fixing plate 3011 and a support plate 3012, in some examples, as shown in FIG. connect.

The embodiment of the present disclosure does not limit the connection method between the first shell wall 11 and the support plate 3012. In some examples, as shown in FIG. It is bent at the first shell wall 11 .

When making the window 110 on the first shell wall 11 of the photocage 1 , a part of the metal wall can be reserved at the edge of the window 110 first. Then, this part of the metal wall is folded away from the inside of the photocage 1 to form the support plate 3012 .

In some other examples, the first shell wall 11 and the support plate 3012 may also be connected in a non-integral manner, for example, the support plate 3012 may be welded or bonded to the first shell wall 11 .

It should be noted that, in actual use, the support bars 301 in the above two forms can be used alone or in combination. In some examples, the support strip 301 located at the long edge 111 of the window 110 is connected to the edge of the window 110 , and the support strip 301 located at the rest is fixedly connected to the first shell wall 11 through the fixing plate 3011 .

Next, the elastic member 302 is illustrated in more detail:

The embodiment of the present disclosure does not limit the fixing position of the elastic member 302 , and the elastic member 302 may be fixed on the support bar 301 or on the main body 21 . Below, the two cases are illustrated as examples:

In some examples, as shown in FIGS. 4-11 , the elastic member 302 is fixedly connected to the support bar 301 and closely attached to the side wall 212 of the main body portion 21 .

The embodiment of the present disclosure does not limit the type of fixed connection between the elastic member 302 and the support bar 301 , for example, the elastic member 302 and the support bar 301 may be welded, glued or integrally connected.

By arranging the elastic member 302 to be fixedly connected to the support bar 301 , the manufacturing of the shielding member 3 is more convenient, and thus the manufacturing of the photocage assembly is more convenient.

In some other examples, as shown in FIG. 12 , the elastic member 302 is fixedly connected to the main body portion 21 and is closely attached to the support bar 301 .

The embodiment of the present disclosure does not limit the type of fixed connection between the elastic member 302 and the main body portion 21 , for example, the elastic member 302 and the main body portion 21 may be welded or bonded.

The embodiments of the present disclosure also do not limit the position where the elastic member 302 is fixedly connected. In some examples, the elastic member 302 is fixedly connected to the side wall 212 of the main body portion 21 . Exemplarily, after the heat sink 2 is manufactured, the elastic member 302 may be welded or glued on the side wall 212 of the main body portion 21 of the heat sink 2 .

It should be noted that, for the realization of the fixed connection between the elastic member 302 and the main body portion 21 , the elastic member 302 may not be regarded as a part of the shielding member 3 , but the elastic member 302 may be regarded as a part of the heat sink 2 . That is, the shield 3 includes a support bar 301 , the side wall 212 of the main body 21 of the heat sink 2 has an elastic member 302 , and the support bar 301 (or called the shield 3 ) is closely attached to the elastic member 302 .

The embodiment of the present disclosure does not limit the type of the elastic member 302. In some examples, the elastic member 302 includes one or more of metal reeds, conductive foam, conductive rubber and metal springs, but is not limited thereto.

In some examples, as shown in FIG. 6 , the elastic member 302 has a plurality of elongated holes distributed at intervals along the length direction. Of course, the elastic member 302 may also be a continuous board, which is not limited in this embodiment of the present disclosure.

In some examples, as shown in FIG. 6 , the elastic member 302 is a metal reed. The metal reed includes a support portion 3021 and a reed portion 3022 . The reed portion 3022 is bent relative to the support portion 3021 , and the support portion 3021 is opposite to the reed portion 3022 . The support plate 3012 protrudes between the support portion 3021 and the reed portion 3022 , and is fixedly connected with the support portion 3021 . The reed part 3022 is in a suspended state, so the reed part 3022 has good elasticity and can be closely attached to the side wall 212 of the main body part 21 .

The embodiment of the present disclosure does not limit the connection method between the support part 3021 and the support plate 3012. In some examples, the support part 3021 and the support plate 3012 are welded (such as spot welding), and in other examples, the support part 3021 and the support bar 301 bonding.

It can be understood that the metal reed shown in FIG. 6 is only a possible example, and does not constitute a limitation to the embodiments of the present disclosure. In practical applications, other forms of metal reeds can also be used. For example, as shown in FIG. 12 , the supporting part 3021 of the metal reed can also be fixedly connected with the side wall 212 of the main body part 21 , and the reed part 3022 is closely attached to the supporting plate 3012 .

In some examples, as shown in FIG. 7 , the elastic member 302 is a metal bullet point. The metal bullets include connecting pieces 3023 and bullets 3024 . One end of the connecting piece 3023 is connected with the support plate 3012 , and the other end is connected with the elastic point 3024 . The elastic point 3024 is in a suspended state, so the elastic point 3024 has good elasticity and can be closely attached to the side wall 212 of the main body 21 .

In some examples, as shown in FIG. 7 , the support plate 3012 has a through hole, and one end of the connecting piece 3023 can be connected to the inner wall of the through hole, and the through hole provides a space for the spring point 3024 to move, and the spring point 3024 can swing in.

The embodiment of the present disclosure does not limit the specific shape of the metal bullet point, for example, the metal bullet point may be a spherical bullet point, a hemispherical bullet point, a D-shaped bullet point, and the like.

Next, the position of the shielding part 3 is illustrated in more detail:

The embodiment of the present disclosure does not limit the number of the shielding elements 3 and the arrangement of the shielding elements 3 on the first housing wall 11 of the optical cage 1 . The shielding elements 3 can be arranged arbitrarily on the first housing wall 11 according to actual needs. For example, the specific arrangement of the shielding elements 3 can be determined according to the requirements for shielding performance and the specific shape of the first housing wall 11 .

In some examples, the optical cage assembly provided by the embodiments of the present disclosure includes at least one shielding member 3, and the shielding member 3 can be distributed around the radiator 2 at any position on the first housing wall 11 of the optical cage 1, as long as it is compatible with the radiator 2 Just keep in touch.

In order to better understand the optical cage assembly provided by the embodiments of the present disclosure, below, taking the window 110 as a rectangular window as an example, the arrangement of the shielding member 3 is exemplified:

In some examples, there are multiple shielding elements 3 , and the plurality of shielding elements 3 include at least two first shielding elements 31 . The two first shields 31 extend along the two long edges 111 of the window 110 respectively.

Wherein, the long edge 111 is an edge extending along the length direction of the window 110 . The length direction of the window 110 may be the same as the opening direction of the slot of the optical cage 1 .

It should be noted that the two first shields 31 respectively extend along the two long edges 111 of the opening 110 , and it can also be understood that the two first shields 31 are located on the two first sides of the main body 21 of the radiator 2 . On both sides of the side wall, the two first side walls are respectively adjacent to the two long edges 111 , it can also be understood that the two first shielding members 31 are respectively located on one side of the two long edges 111 of the opening 110 .

In some examples, as shown in FIG. 13 and FIG. 14 , the first shielding member 31 includes at least a first shielding section 311 , and the first shielding section 311 is located between two ends of the long edge 111 .

Wherein, the position of the first shielding section 311 between the two ends of the long edge 111 includes the situation that the two ends of the first shielding section 311 are flush with the two ends of the long edge 111 .

In some examples, as shown in FIG. 13 , the first shielding segment 311 is located on one side of the long edge 111 .

In some other examples, as shown in FIG. 14 , the first shielding segment 311 is integrally connected with the long edge 111 of the opening 110 .

The technical solutions provided by the embodiments of the present disclosure can effectively improve the shielding performance of the optical cage assembly by disposing the first shielding section 311 on the long edge 111 or one side of the long edge 111 where electromagnetic noise leakage is relatively serious.

It should be noted that the first shielding section 311 is located between the two ends of the long edge 111, it can also be understood that the first shielding section 311 is located between two straight lines (limited range) where the two wide edges 112 are located, and also It can be understood that the first shielding segment 311 is opposite to the long edge 111 .

In some examples, as shown in FIG. 15 , the first shielding member 31 further includes a second shielding section 312 , and the second shielding section 312 is located outside the two ends (limited range) of the long edge 111 .

In the technical solution provided by the embodiments of the present disclosure, by adding the second shielding section 312, the shielding performance of the optical cage assembly can be further improved.

It should be noted that the second shielding section 312 is located outside the two ends of the long edge 111. It can also be understood that the second shielding section 312 is located outside the range defined by the two straight lines where the two wide edges 112 are located. It can also be understood that Therefore, the second shielding segment 312 is staggered from the long edge 111 .

In some examples, as shown in FIGS. 16 and 17 , the plurality of shields 3 further includes at least one second shield 32 . The second shield 32 extends along any wide edge 112 of the window 110 .

Wherein, the wide edge 112 is an edge extending along the width direction of the window opening 110 . The width direction of the window 110 may be perpendicular to the opening direction of the slot of the optical cage 1 .

The embodiment of the present disclosure does not limit the distance between the second shielding member 32 and the wide edge 112 of the window 110 , the distance between the second shielding member 32 and the wide edge 112 of the window 110 is determined by the size of the main body 21 of the radiator 2 . In some examples, as shown in FIG. 16 , the second shield 32 is adjacent to the opening of the socket 10 and closer to the wide edge 112 . In some other examples, as shown in FIG. 17 , the second shielding member 32 is farther away from the opening of the slot 10 and farther away from the wide edge 112 .

It should be noted that the second shielding member 32 extends along the wide edge 112 of the window 110. It can also be understood that the second shielding member 32 is located on one side of the wide edge 112 of the window 110. It can also be understood that the second shielding The member 32 is located on one side of the second side wall of the main body portion 21 of the heat sink 2 , and the second side wall is adjacent to the wide edge 112 .

In some examples, as shown in FIG. 18 , there are two second shielding members 32 , and the two second shielding members 32 respectively extend along the two wide edges 112 of the opening 110 . That is, a plurality of shielding members 3 surround the window 110 (or called surrounding the heat sink 2 ), and the shielding performance of the photocage assembly in this form is the best.

It should be noted that, in addition to using the conductive shielding member 3 to form a shielding structure, the leakage of electromagnetic signals is suppressed. In some other examples, the material of the shielding member 3 may also be a wave-absorbing material, which is used to improve the shielding performance of the photocage assembly by absorbing leaked electromagnetic signals. It should also be noted that, when the shielding member 3 is a wave-absorbing material, the structure of the shielding member 3 may be the same as that when the shielding member 3 has conductivity.

An embodiment of the present disclosure also provides an optical communication device, and the optical communication device includes the above-mentioned optical cage assembly.

The optical communication device provided by the embodiment of the present disclosure uses the optical cage assembly provided by the embodiment of the present disclosure, so that the heat dissipation performance of the optical communication device and the shielding performance of the electromagnetic noise of the optical module are better.

The terms used in the embodiment section of the present disclosure are only for explaining the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure shall have common meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "comprises" or "comprising" and similar terms mean that the elements or items listed before "comprising" or "comprising" include the elements or items listed after "comprising" or "comprising" and their equivalents, and do not exclude other component or object. "Up", "Down", "Left", "Right" and so on are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. "Plurality" means two or more, unless otherwise clearly defined.

The above are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure. Inside.

Claims

An optical cage assembly, characterized in that the optical cage assembly comprises an optical cage (1), a radiator (2) and at least one shielding member (3);

The first shell wall (11) of the light cage (1) has a window (110);

The radiator (2) includes a main body (21) and a boss (22), the bottom wall (211) of the main body (21) is connected to the boss (22), and the main body ( 21) Located on the outer surface of the first shell wall (11), the boss portion (22) is located at the window (110);

The at least one shielding part (3) is located on the path of electromagnetic signals leaking through the window (110), and is in contact with the side wall (212) of the main body part (21).
The optical cage assembly according to claim 1, characterized in that, the optical cage (1), the heat sink (2) and the at least one shielding member (3) all have electrical conductivity, and the at least one The shielding part (3) is electrically connected with the optical cage (1) and the heat sink (2) respectively.
The photocage assembly according to claim 1, characterized in that the material of the at least one shielding member (3) is a wave-absorbing material.
The optical cage assembly according to any one of claims 1-3, characterized in that, each of the shielding members (3) comprises a support strip (301) and an elastic member (302);

The support bar (301) is fixed on the outer surface of the first shell wall (11) and extends along any edge of the window (110);

The elastic piece (302) is in contact with the support bar (301), and the elastic piece (302) is in contact with the side wall (212) of the main body portion (21).
The photocage assembly according to claim 4, wherein the support strip (301) comprises a fixed plate (3011) and a support plate (3012), and one side of the fixed plate (3011) is connected to the support plate ( 3012) the side wall is fixedly connected;

The side of the fixing plate (3011) away from the support plate (3012) is fixedly connected to the first shell wall (11);

The support plate (3012) is fixedly connected or tightly fitted to the elastic member (302).
The optical cage assembly according to claim 5, characterized in that there are multiple radiators (2), and there are two shielding members (3) between two adjacent radiators (2);

The two shielding pieces (3) are respectively in contact with adjacent heat sinks (2), and the support bars (301) of the two shielding pieces (3) share the same fixing plate (3011).
The photocage assembly according to any one of claims 4-6, characterized in that, the support bar (301) is integrally bent and formed.
The photocage assembly according to claim 4, wherein the support bar (301) comprises a support plate (3012);

The side wall of the support plate (3012) is fixedly connected with the first shell wall (11);

The support plate (3012) is fixedly connected or tightly fitted to the elastic member (302).
The optical cage assembly according to claim 8, characterized in that, the support plate (3012) is integrally connected with the edge of the window (110), and the support plate (3012) is relatively to the first The shell wall (11) is bent.
The photocage assembly according to any one of claims 4-9, characterized in that, the elastic member (302) is fixedly connected to the support bar (301), and is connected to the side wall of the main body (21) (212) snug fit.
The photocage assembly according to any one of claims 4-9, characterized in that, the elastic member (302) is fixedly connected to the main body part (21), and is closely attached to the support bar (301) .
The photocage assembly according to any one of claims 4-11, characterized in that the elastic member (302) comprises one or more of metal reeds, conductive foam, conductive rubber and metal springs.
The optical cage assembly according to any one of claims 1-12, wherein the at least one shield (3) comprises at least two first shields (31);

The two first shielding members (31) respectively extend along the two long edges (111) of the window (110), and the long edges (111) extend along the length direction of the window (110) edge.
The optical cage assembly according to claim 13, wherein each of the first shielding members (31) comprises at least a first shielding segment (311);

The first shielding segment (311) is located between two ends of the long edge (111).
The optical cage assembly according to claim 14, wherein each of the first shielding members (31) further comprises a second shielding section (312);

The second shielding section (312) is located outside the two ends of the long edge (111).
The optical cage assembly according to any one of claims 13-15, wherein the at least one shield (3) further comprises at least one second shield (32);

Each of the second shields (32) extends along any wide edge (112) of the window (110), and the wide edge (112) extends along the width direction of the window (110). edge.
The optical cage assembly according to claim 16, characterized in that there are two second shielding members (32), and the two second shielding members (32) are respectively along the two sides of the window (110). A wide edge (112) extends.
An optical communication device, characterized in that the optical communication device comprises the optical cage assembly according to any one of claims 1-17.